Apparatus for concreting piles



F. W. CAMP.

APPARATUS PUR CONCRETING PILES.

APPLICATION man rsa1?, 1920'.

Patented Apr. 4, 1922.

3 SHEETS-SHEET l.

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F. W. CAMP.

APPARATUS Fon coNcRETlNG PILES.

APPLICATION FILED FEB. 7| |920.

Patented Apr. 4, 1922.

PATENT OFFICE.

FRANK W. CAMP, OF SAN FRANCISCO, CfdfIlFORNI/A.v

A?:PARATUS FOR CON CRETING PILES.

specification of Letters rarest.

Patented Apr. 4.-, 1922.'

Application led February 7, 1920. Serial No. 356,967.

To all ti/om t may concern.'

Be it Vknown that l, Fnaxn'll. Geur, a citizen of' the United States', and a resident of the city and county of San .Fianciscm Stato of California` have invented new and useful Improvements in Apparatus for Concreting Piles, of which the following is a specification.

The object of my invention is to pro-vide a sedtionalized form which may be assembled about the pile and above the water line7 and within which form a suitable mixture, as of co1ic1'ete,'may be placed, and the form then allowed to descend with its contained concrete coating material around the pile to a point below the mud line. The concrete is then allowed to set and the form subsequently removed therefrom, leaving a concrete coating around the pile extending preferably above the water line and below the mud line thus eifectually protecting the pile from the ravages of the teredo7 or other deterioration, and also providing a reinforcement.

These objects I accomplish by assembling around the pile a sectionalized form, the individual sections of which are joined together at matching joints and with suitable holding means, the lowermost sections being provided with means whereby a bottom closure from the form to the pile is provided, this latter being of a flexible nature, and for the purpose of supporting the gravel layer and therefore also the cement mixture= the surface of the gravel forms a line of break for kthe concrete after it has Vset so as lto permit the free removal of the said first sections of the form. These first or lower-most sections are preferably assembled above the water line, and a plurality of additionalsections are then. assembled on top of thesaid'bottom sections, which plurality of forms makes a complete boundary surface around the pile, and at a suitable space therefrom forming a mold for theh coating lo be applied to the pile. The concrete rnixturc is then filled into the form'on top 4of the aforesaid gravel layer and the suspen sion cables by which the form is supported" arel slowly lowered permitting this first p01'- tion of the form, includingthe bottom section, to descend. Further sections may then be assembled and additional concrete poured therein and the above step repeated until' the bottom section approaches themud line.`

At this time, in order to provide a cavity around the pile below the mud line, water Jets are caused to impinge against the pile at the mud line, the action of which water Jets is to scour the mud away and to clean the body of the pile during the further descent ofthe form with its contained concrete, and until the desired depth is attained.

It is to be understood that during this lowering process further lform segments are assembled in sections onthe top of the descending form and additional concrete mixture is placed therein, so that the concrete contained within the completely formed mold is separated at all times from the action of the sea water, and is retained insuch condition around the pile, and tothe desired depth and height, completely insulating the pile surface from any deleterious eects.

By referring to the accompanying drawings my invention will be made clear.

Fig. l illustrates partly in, section and partly in elevation the lower member of my form.

Fig. 2 is a. plan view of the lower member of the form.

Fig. 3 is an assembly of the lower member with two form sections assembled on top thereof and showing the water jet connections. 1

Fig. 4. illustrates my form in section and in place around a pile and the way in which itis to be used.

Fig. 5 is a plan view 'of one of the upper sections.

.F ig. 6 indicates the manner of joining the segments to form rthe section.

Fig. 7 is a detail section of a portion of the lower form illustrating the bottom gas kot for supporting and retainingl the gravel layer upon which the concrete mixture is to rest.

Fig. 8 is a detailenlarged view, show-Y ing the lowest mold section and a water jet nozzle; Y'

Fig. 9 represents a pair of water `jet nozzles; f

Fig. l() is a view in side elevation showing the use of a tool. to pry apart the mold sections;

Fig. l1 is a sectional `plan View, illustrant..

ing the manner in which the mold sections open; f f

out departing from my invention.

Fig. 12 is a sectional plan view illustrating the position assumed by the parts of the lowermost'mold section when open; and

Fig. 13 illustrates in side elevation the separated position of the same parts.

Throughout the figures similar numerals refer to identical parts. v

" The pile to be coated with concrete, is 1ndicated by the numeral 1 (see Fig.'4), which pile is presumed to be in place within the mud or sea bottom 4, Vand to extend above the water surface 3. It is desired to provide a concrete covering `around the said pile extending below the mud line, or water bottom 4. The lower section which is to contain thegravel layer, or sand gasket, 5, is indicated in detail at Figs. 1. and 2, in which the two principal segments are indicated by the numerals Gand 7, and which are to be assembled together as indicated at Fig. 2, as by pins and links 8, 9, 1() (see also Fig. 6) or other suitable locking connections.

The bottom sections 6 and 7 are provided with a plurality of hinged members arranged radially (as indicated in Figs. 1 and 7 by the numeral 11). These are made of substantially rigid land heavy material to adequately support the desired weight of concrete mixture, and upon the hinged leaves 11 I prefer to form a plurality of relativel thin overlapping flexible segments 12. bove these leaves, preferably made of thin metal, I `secure the two annular canvas segments 13,14, the ends of which overlap, as indicated by the dimension line at 15 (Fig. 2) when the segments 6 and 7 are assembled. Suitable reinforcement for the cylindrical segments 6 and 7 is provided by the annular rings 16 and 17 parted on the joints 18, 19. Thls bottom section assembled around the pile 1 and (preferably above the wat-er line, is supporte by the holding means 20, 21 actuated from the winch 22, and is now filled Vwith a layer of gravel 5. Above the said bottom section, and i about the periphery thereof is now to be .assembled the form section 22, 23, 24, 25 composed preferably of the two segments 22, 24 hinged at 26, and 23, 25 hinged at 27, and which segments are provided with assembling and locking means on each side as 8, 9 and 10, previously described.

I prefer to insert a packing of loose material, as .a rubber gasket,`between the assembling joints, as indicated by 28; andto make the forms of wood so that they will readily float when disassembled after the concrete has set, but it will be understood that `the forms may be made .in metal if desired with- Reinforcing rings may also be rovided i aronndkll thefsegments as 16, 17 i desired.

After assembling one or more of the segments 22,23, 24, 25 on the bottom section 6, 7 and about the pile above the water surface and on top of the gravel body 5,`the concrete is to be poured at 29, thus forming a layer of plastic material above the water line, retained in shapeV and position by the assembled portion of' the form and above the water line. The said sections containing the plastic material are now to be lowered and additional form segments as 30, 31 assembled thereabove, and additional concrete filled therein, as the form is lowered by the chains or cables 20, 21 actuated from the winch 22.

As the mud line 4 is approached by the descending form containing the concrete, water pressure is turned on as through the pipes 32, 33 (see Fig. '4) from the pump 35 takingv its suction through pipe 36, or other suitable source of water pressure may be utilized for the purpose of establishing water jets under pressure as from the pipes 37, 38, 39, 40, Fig. 2, which areherein'shown as extending downwardly from the-ends of lateral branch pipes connected with pipes 32, 33, said pipes 37, 38, 40 and 41 passing through openings in the lower flange of the form segments and Abeing supported thereby. The action of these .water jets as the form descends toward the mud line 4 will be a scouring actionn aga-instV the pile surface removing the mudand accumulated material therefrom, as in the direction of the arrows 41, 42 of Fig. 4, and permitting the descend ing form with its contained concrete to sink below the mudline 4, the necessary yadditional form segments being assembled into sections of any length required so that the body of theconcrete will extend well above the water surface 3 and to the level 43. The form is now to be retained in the .latter position as by the cables 20,21 and winch 22, until the body of concrete has set and it will be seenthat the supporting base 44 for the winch22 'and pump 35 should preferably be anchoredl to the pile 1, as by the pin 45, thereby preventingmovement of the form with respect to the pile during the setting period.

After the concrete has suiciently set, the form is removed by withdrawing the series of pins S, 8 as by the chains 46, and a wedge shaped tool then being inserted on either side of the joint 47, which continued throughV the several sections `will cause the form segments to split away from each other` relieving themselves from the set concrete. The entire structure will now float, if `made of wood, or may be withdrawn by the cables as 20, 21,V the several segments being temporarily retained together as by the hooks 48. l

The. several segments as-22, 24 and 23, 25 will more readily freethemselves because of thefhinges as 26, 27 and the bottom section 6, 7 will readily free itself because of the loose gravelbody 5, no part of the concrete' being in contact with the hinged bottomand canvas member 13, 14.` The form is l now ready for assembly on another pile.

Particular attention is directed to the scouring action of the Water jets and their function in providing a channel or opening around the pile and below the mud surface to secure the eliicient placing of the concrete coating belovvv the mud line to any depth rcquired and to facilitate the operations that are carried on entirely above the water line, and the result secured of an elicient concrete coating which expands throughout the submerged surface and beyond the Water surface which heretofore contacted with the f pile.

I claim:

l. A form for molding concrete around piles consisting of a plurality of annular segments formed to enclose an annular space surrounding the pile, and to be assembled in a complete mold 'form and having continuous joints therethrough parallel With the axis of the pile; a plurality of locking means for said joints, and operating connections ttor disassembling said locking means from above the Water line whereby the form may be separated after the concrete has been molded therein and set by Wedging apart the sections along the said joint line. e

2. A 'form for molding concrete arount piles consisting of al plurality of lannular segments formed to enclose an annular space surrounding the pile,"and to be assembled in a complete mold form and having a continuous joint therethrough parallel with the axis of the pile; a plurality o't locking means for said joints, and operating connections for disassembling said locking means 'from above the Water line whereby the form may be separated after the concrete has been molded therein and set by Wedging apartthe sections along the said joint line, in combination with Water circulating means at the bottom of and exterior to said form, as and for the purpose set forth.

3. A form for molding concrete under water around a pile consisting of a plurality of molding segments which may be assembled in annular form, said segments provided with a plurality of relatively stili? hinged members extending radially inward; a plurality of flexible overlapping leaves supported by said hinged members and substantially closing the bottom of the assembled :torm to the pile surface; and an annular layer of flexible material above said leaves constructed and adapted to support a layer of inert material.

4f. A form for molding concrete under Water around a pile consisting of a plurality of molding segments which may be assembled in annular form, said segments provided With a plurality of relatively stili.' hinged members extending radially inward; a plurality of flexible overlapping leaves sup ported by said hinged members and substantially closing the bottom of the assembled form to the pile surface; and an annular layer of canvas above said leaves constructed and adapted to support a layer of inert material, and a layer of granular material above said. canvas forming a bottom surface on which and against the surface of the pile thereabove concrete may be formed.v j

In testimony whereof, l have hereunto set my hand at San Francisco, California, this 26th day of January 1920.

FRANK XV, CAMP. 

